USMLE · Question #292
A drug ending in the suffix (navir) is considered a ______.
The correct answer is B. Protease inhibitor. Drugs ending in -navir are protease inhibitors, a class of antiretroviral medications used to treat HIV/AIDS by blocking the HIV protease enzyme, which the virus needs to cleave polyprotein precursors into functional proteins - without it, the virus cannot replicate. The…
Question
A drug ending in the suffix (navir) is considered a ______.
Options
- AAntidepressant
- BProtease inhibitor
- CBeta antagonist
- DH antagonist
How the community answered
(38 responses)- A5% (2)
- B82% (31)
- C11% (4)
- D3% (1)
Explanation
Drugs ending in -navir are protease inhibitors, a class of antiretroviral medications used to treat HIV/AIDS by blocking the HIV protease enzyme, which the virus needs to cleave polyprotein precursors into functional proteins - without it, the virus cannot replicate.
The distractors are incorrect because: antidepressants use suffixes like -pine, -ine, or -zine (e.g., fluoxetine, amitriptyline); beta antagonists (beta-blockers) end in -olol (e.g., metoprolol, atenolol); and H2 antagonists (histamine blockers) end in -tidine (e.g., ranitidine, famotidine).
Memory tip: Think "navir = nails HIV" - the -navir suffix nails down HIV replication by inhibiting its protease. Real-world examples include ritonavir, lopinavir, and saquinavir.
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